Good day , I built and install a custom module in Odoo v8 , which I can access if I'm logged as an Administrator user .The problem is that when entering Odoo with any user other than Administrator the module not appear.

In what maner I can give privileges to users to use my module ?? Or what I have to do to show my module at all?

To make it visible for other users you have to define Access rights for your model.

Each access right is associated to a model, a group (or no group for global access), and a set of permissions: read, write, create, unlink. Such access rights are usually created by a CSV file named after its model: ir.model.access.csv.

Create a folder named "security" in your module and inside that create ir.model.access.csv file:-